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vol. 36 no. 1 122-127
PubMed
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History
- Received August 10, 2009
- Accepted November 2, 2009
- Published online June 30, 2010.
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- previous version (November 19, 2009 - 07:40).
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©ERS 2010
Author Information
- A.S. Laney,
- E.L. Petsonk,
- A.L. Wolfe and
- M.D. Attfield
- Surveillance Branch, Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV, USA
- A.S. Laney, Surveillance Branch, Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health Centers for Disease Control and Prevention, 1095 Willowdale Road, Mail Stop HG900.2, Morgantown, WV 26505–2888, USA E-mail: alaney{at}cdc.gov